Method of electrical welding



T. E. MURRAY, 1a., AND J. B. MURRAY. METHOD OF ELECTRICAL WELDING.APPLICATION FILED DEC. 16, 19:9.

1,339,968, Patented May 11, 1920.

UNITED sTATns Wires (inmost THOMAS E. MURRAY, JR., AND JOSEPH B. MURRAY0'." RR-[WK LYN NEEV YORK.

IVIETHOD UL ELEGTRTCAT. \V'EIN'XINFR.

Specification of Liftif rs Pat nt.

l lii llidfll May 1 1, i920- Application tiled December 16. was.tles'ial l l 3 15234 Figure 1 is a vertical section of the flangedplates which are to be welded together, show-- ing the bushing in placebetween said plates, the parts being in the position before weld ing.Fig. 2 is a similar section, showing the parts in position afterwelding. Fig. 3 is a. horizontal section on the line 3, 3 of Fig. 1.Fig. 4 is a plan view of two flanged plates welded together with aplurality cl"- ushings between. them. Fig. 5 is u long-i tudinal sectionon the line 5, 5 of Fig. 4.

Similar letters of reference indicate like parts.

As here shown, we produce a hollow hex casingforrned of two sections.euvh of wl' i-h comprises a plate C of section A, or I) of section B,each plate having four flanges E, F, G, H. In said plates are circulartering openings I, J. K is a bushing, the bore of which registers withthe openings 1, J, which bushing is to be electrically welded within thesections A, B. The distance a, b, Fig. 2, between the inner surfaces ofthe plates C, D of the sections and the corresponding length of thebushing K having been selected, the flanges are provided with take-u sL, M, the united lengths of which c, d, Fig. 1-are slightly in excess ofthe dis tance e, f, measured from the to of the bushing, when placed onthe plate ll of 'tion B, as shown in Fig. 1, to the under surface of theplate (l of section A. The weld ing current being established and thesections pressed together, the metal of the takeups L, M is first fusedand extruded. Before the take-ups are wholly eliminated, the top of thebushing makes contact with said top plate Q lav-limp and a wwfri marlciwtwecn said said to plate, and also bei'msillng and the 1 Nmtiiig isthus se- I art: with n the casin ii l e l. 2 M have shown rut u mini-mi"ol' bushings, ii i riil"!1. -.iiuTHf \t(IS, 15 i, m b welded in the samewe 'ile ,\{-Lli i.ll$ A, l:s::;5;.- to produce a o to. of the opp0 maybe absent, the iilliillitl, and the helmu. as; Indore, on the rethin umi t wilt illl lliiluf. li iyashiun wiihin laughed pl: united to form ahollow.- -1flillif he cider:registering ipeim Win it r iding said hm,with mitt-a l .y ol a. predeternni-el dept plo ing? the hashing betwsaid will: its hore in registry tw et: t

and in mutant at one iant plate being slightly less than said uniteddepth of said f3.l@-1p8, and then establishing the welding current andpressing said sections together until the .metal of said l'z'tlfUiIPS isfused and extruded and the said distant plate makes mutant with saidhushing; whereby both ends of said bushing are Welded to said plates. A

Q. The method of electrically welding a. plurality of bushingssimultaneously Within flanged plates united to form a hollow casinghaving a omresponding plurality of circular registering openings, whichconsists in providing said flanges with take-ups unitcdly of. apredetermined depth, placing the bushings between said plates with theirbores in registry with said openings respectively and each in contact atone end with one of said plates. the distance between the opposite endsof said hushings and the inner surface of the distant plate beingslightly hing and with said bushin s; w ereby both ends of each of saidbus lings are welded to said plates.

. In testimony whereof weliave ailixed 0m signatures 1n presence of twowitnesses.

THOMAS E. MURRAY, Jn. JOSEPH n. MURRAY.

Witnesses Qmz'nmnn T. Pewrnn, MAY T. MCGAIIRY.

